Vienna Toughens Enforcement of Short-Term Rental Law

Vienna's city administration has moved to tighten enforcement of the rules governing short-term rentals, giving housing authorities more room to act against unregistered listings in the run-up to a mandatory registration-number system due to take effect in 2027.

What Vienna's rental law already requires

Vienna has run a dedicated short-term rental law since 2021. It caps the rental of a primary residence on platforms such as Airbnb, Booking.com and Vrbo at 90 days a year unless the unit carries separate zoning for tourist accommodation. Owners who exceed that limit, or who let out a property zoned purely for residential use on a full-time short-term basis, have technically been in breach of the law since it took effect, though enforcement has been inconsistent.

What the city is changing now

The city says it is closing that enforcement gap. That means more active checks on listings against the housing register, tighter coordination with platforms to flag properties that lack proper zoning, and preparation for the registration-number system that hosts will need to display from 2027 onward, a requirement already flagged by Vienna's housing authority. Hosts operating without the eventual registration number, or beyond the 90-day cap on primary residences, face the prospect of fines and possible listing removal once the new checks are in place.

Why Vienna is not acting alone

The move fits a broader pattern across European cities looking to formalize restrictions on short-term letting rather than rely on ad hoc crackdowns. Brussels has been working on giving municipalities firmer legal footing to defend these kinds of local caps against challenge, which gives Vienna's approach more durability than a one-off local ordinance.

For hosts operating in Vienna, the practical task is unchanged in substance but sharper in urgency: confirm which zoning category a property falls under, track days let against the 90-day threshold if renting a primary home, and get ready to register ahead of the 2027 deadline rather than waiting for an inspection to force the issue.